HAL LTDC How to Use ¶

group LTDC_How_To_Use

How to use the LTDC HAL module driver ¶

The LTDC HAL driver can be used as follows: ¶

• Declare a hal_ltdc_handle_t handle structure, for example: hal_ltdc_handle_t hltdc;

• Initialize the LTDC low level resources :

  • Enable the LTDC interface clock (if not enabled in HAL_LTDC_Init() when USE_HAL_LTDC_CLK_ENABLE_MODEL set to HAL_CLK_ENABLE_NO)

  • Configure the LTDC clock source

  • NVIC configuration if you need to use interrupt process

    • Configure the LTDC interrupt priority

    • Enable the NVIC LTDC IRQ Channel

• Use HAL_LTDC_Init() function to initialize the LTDC handle and associate the physical instance.

• Configure the LTDC output timing synchronization using HAL_LTDC_SetConfig() function.

• Configure the needed layer(s) using HAL_LTDC_SetConfigLayer() .

• And finally start the LTDC display by calling HAL_LTDC_Start() .

Callback registration ¶

When the compilation flag USE_HAL_LTDC_REGISTER_CALLBACKS is set to 1, use Functions HAL_LTDC_RegisterXxxCallback() to register an interrupt callback. When the compilation flag is set to 0 or not defined, the callback registration feature is not available and all callbacks are set to the corresponding weak functions.